Не понимаю почему обрывается Tween

[Riki]

Вопрос: есть код, после запуска swf-ки, он выполняется но после 5-6 круга(объекты описывают квадрат, и после того как 5-6 раз пройдут по квадрату, 3 из них останавливаются а 1 продолжает бегать), tween перестает работать, почему?

var TweenX:Tween = new Tween(enemy, "x", None.easeNone, 167, 415, 60, false);
TweenX.addEventListener(TweenEvent.MOTION_FINISH, plus_y_motion);
function plus_y_motion(e:TweenEvent):void {
var TweenY:Tween = new Tween(enemy, "y", None.easeNone, 119, 303, 60, false);
TweenY.addEventListener(TweenEvent.MOTION_FINISH, minus_x_motion);
}
function minus_x_motion(e:TweenEvent):void {
var TweenX2:Tween = new Tween(enemy, "x", None.easeNone, 415, 167, 60, false);
TweenX2.addEventListener(TweenEvent.MOTION_FINISH, minus_y_motion);
}
function minus_y_motion(e:TweenEvent):void {
var TweenY2:Tween = new Tween(enemy, "y", None.easeNone, 303, 119, 60, false);
TweenY2.addEventListener(TweenEvent.MOTION_FINISH, plus_x_motion);
}
function plus_x_motion(e:TweenEvent):void {
var TweenX3:Tween = new Tween(enemy, "x", None.easeNone, 167, 415, 60, false);
TweenX3.addEventListener(TweenEvent.MOTION_FINISH, plus_y_motion);
}
 
//
 
var TweenY2:Tween = new Tween(enemy2, "y", None.easeNone, 119, 303, 60, false);
TweenY2.addEventListener(TweenEvent.MOTION_FINISH, minus_x_motion2);
function minus_x_motion2(e:TweenEvent):void {
var TweenX22:Tween = new Tween(enemy2, "x", None.easeNone, 415, 167, 60, false);
TweenX22.addEventListener(TweenEvent.MOTION_FINISH, minus_y_motion2);
}
function minus_y_motion2(e:TweenEvent):void {
var TweenY22:Tween = new Tween(enemy2, "y", None.easeNone, 303, 119, 60, false);
TweenY22.addEventListener(TweenEvent.MOTION_FINISH, plus_x_motion2);
}
function plus_x_motion2(e:TweenEvent):void {
var TweenX32:Tween = new Tween(enemy2, "x", None.easeNone, 167, 415, 60, false);
TweenX32.addEventListener(TweenEvent.MOTION_FINISH, plus_y_motion2);
}
function plus_y_motion2(e:TweenEvent):void {
var TweenY2:Tween = new Tween(enemy2, "y", None.easeNone, 119, 303, 60, false);
TweenY2.addEventListener(TweenEvent.MOTION_FINISH, minus_x_motion2);
}
 
//
 
var TweenX22:Tween = new Tween(enemy3, "x", None.easeNone, 415, 167, 60, false);
TweenX22.addEventListener(TweenEvent.MOTION_FINISH, minus_y_motion3);
function minus_y_motion3(e:TweenEvent):void {
var TweenY22:Tween = new Tween(enemy3, "y", None.easeNone, 303, 119, 60, false);
TweenY22.addEventListener(TweenEvent.MOTION_FINISH, plus_x_motion3);
}
function plus_x_motion3(e:TweenEvent):void {
var TweenX32:Tween = new Tween(enemy3, "x", None.easeNone, 167, 415, 60, false);
TweenX32.addEventListener(TweenEvent.MOTION_FINISH, plus_y_motion3);
}
function plus_y_motion3(e:TweenEvent):void {
var TweenY2:Tween = new Tween(enemy3, "y", None.easeNone, 119, 303, 60, false);
TweenY2.addEventListener(TweenEvent.MOTION_FINISH, minus_x_motion3);
}
function minus_x_motion3(e:TweenEvent):void {
var TweenX22:Tween = new Tween(enemy3, "x", None.easeNone, 415, 167, 60, false);
TweenX22.addEventListener(TweenEvent.MOTION_FINISH, minus_y_motion3);
}
 
//
 
var TweenY22:Tween = new Tween(enemy4, "y", None.easeNone, 303, 119, 60, false);
TweenY22.addEventListener(TweenEvent.MOTION_FINISH, plus_x_motion4);
function plus_x_motion4(e:TweenEvent):void {
var TweenX32:Tween = new Tween(enemy4, "x", None.easeNone, 167, 415, 60, false);
TweenX32.addEventListener(TweenEvent.MOTION_FINISH, plus_y_motion4);
}
function plus_y_motion4(e:TweenEvent):void {
var TweenY2:Tween = new Tween(enemy4, "y", None.easeNone, 119, 303, 60, false);
TweenY2.addEventListener(TweenEvent.MOTION_FINISH, minus_x_motion4);
}
function minus_x_motion4(e:TweenEvent):void {
var TweenX22:Tween = new Tween(enemy4, "x", None.easeNone, 415, 167, 60, false);
TweenX22.addEventListener(TweenEvent.MOTION_FINISH, minus_y_motion4);
}
function minus_y_motion4(e:TweenEvent):void {
var TweenY22:Tween = new Tween(enemy4, "y", None.easeNone, 303, 119, 60, false);
TweenY22.addEventListener(TweenEvent.MOTION_FINISH, plus_x_motion4);
}